1992

6.8

2004

8.3

2002

8.0

1998

7.6

10.0

9.0

2022

5.7

1988

8.0

2012

7.4

2008

7.7

1990

7.4

1993

7.1

1976

7.9

2021

9.0

2022

7.4

1976

8.0

1998

7.2

2001

7.6

1990

8.1

2015

7.6